A source at the EFCC told the News Agency of Nigeria (NAN) in Abuja that Elechi arrived at the commission’s office at 10am.
The source said the former governor was at the commission to honour the invitation by the EFCC.
On January 29, the EFCC invited the former governor’s for interrogation.
Elechi, who left office on May 29, after a second term, could not face the anti-graft agency earlier since he had constitutional immunity against prosecution.
Wilson Uwujaren, the spokesman of EFCC, confirmed the development.